***** "I use this app when sound checking, does the job, nice & simple to use, can't fault it." - Colin Challinor

Octave RTA is a powerful real-time audio analysis app. Designed with musicians and recording engineers in mind, it can also be used by anyone interested in the world of sound. Ideal for room tuning or speaker tuning, the app enables portable, precision audio measurement and visualization.

Feature Highlights:
● Full, 1/3 and 1/6 Octave
● FFT Size (2048 to 16384 points)
● Fast, Slow (exponential) and Infinite Averaging
● Toggle between Flat, A and C weighted modes
● Snapshot overlay for quick comparison
● Lock mode to auto track peak band
● Pan to adjust visible dB range
● iPhone X ready

Audio credits: "Basement Floor" and "Enchanted Journey" by Kevin MacLeod

What’s New

Version 1.2.5

Thank you for helping us improve Octave RTA app! Please rate it on the App Store now, so we can make it even better!

● Toggle between Flat, A and C weighted modes
● Snapshot overlay for quick comparison (RTA module)

Ratings and Reviews

4.8 out of 5
25 Ratings

25 Ratings

BernieRainerGuy ,

Really Great App

I really like this app. I've tried so many different real time analysers but this one is streets ahead of the others I've tried. I use it daily and find it very accurate and so useful for my sound engineer work. Top job to the developer.

Mdemmdem ,

Elegance delivered

Great app fully recommend. Elegant and clear user interface, great for hi-fi / home cinema installations. Improvements - very minor, but feature to screen grab a set of data would be nice. Apart from that - great job!

JGBthing ,

Great audio tool

If you do sound recording at all, then this is a great tool to quickly determine which frequencies in your room are problematic. Very good


7.1 MB

Requires iOS 11.0 or later. Compatible with iPhone, iPad and iPod touch.

Age Rating
Rated 4+
© 2018 ONYX Apps


  • Family Sharing

    Up to six family members will be able to use this app with Family Sharing enabled.

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